Show TOC

Content Type in Microsoft Outlook is Missing or EmptyLocate this document in the navigation structure


Symptom: In Microsoft Outlook when you click GetAll, a missing or an empty content type header appears while trying to read a message. The same problem appears while adding SAP Service Reference.

Solution: Microsoft provided a fix for the above issue in WCF Data Service 5.5 or above.


  1. Upgrade your project to WCF Data Service 5.5 or above.
  2. Verify which version of DLLs was added in the GWM generated project. Check for the DLLs below after installing WCF Data Service 5.5 or above:
    1. Microsoft.Data.OData
    2. Microsoft.Data.Services.Client